Specific properties of the radiation emitted by a spatially modulated resonance medium excited by an ultrashort light pulse propagating through the medium at a variable superluminal velocity are analyzed. In so doing, frequencies different from that of the resonance transition of the medium may appear in the emission spectrum. It is demonstrated that, in contrast to an earlier studied case of medium excitation at constant velocity, variation of the excitation velocity leads to generation of a spectral continuum, the boundaries of which are determined by the range of variation of the medium-excitation velocity.
|Translated title of the contribution||ИЗЛУЧЕНИЕ НЕОДНОРОДНОЙ РЕЗОНАНСНОЙ СРЕДЫ, ВОЗБУЖДАЕМОЙ С ПЕРЕМЕННОЙ СВЕРХСВЕТОВОЙ СКОРОСТЬЮ|
|Number of pages||6|
|Journal||Optics and Spectroscopy (English translation of Optika i Spektroskopiya)|
|State||Published - 1 May 2017|
Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics